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本发明研究出一种单脉冲雷达设备,该设备由第一和第二辐射器、波束形成网络及多通道接收机组成。第一和第二辐射器安排在与瞄准轴对称的位置上,以便在预定周期内辐射雷达脉冲,从而产生第一和第二定向辐射方向图。波束形成网络以同相和反相关系把第一和第二辐射器的第一和第二定向辐射方向图合成为和与差方向图。多通道接收机由和及差方向图形成一个编轴信号,它表示目标偏离视轴方向的偏差及由于抑制和方向图的旁瓣响应而得到的旁瓣抑制信号。第一和第二定向耦合器放在波束形成网络和多通道接收机之间的和及差方向图信号发射通道中。幅度和相位相同的第一和第二校准信号经第一和第二定向耦合器注入和及差方向图信号发射通道。在多通道接收机输出端检测到这种校准信号,而和及差方向图信号发射通道之间的相位特性要予以补偿,以便与检测结果相一致。
The present invention has developed a monopulse radar apparatus which consists of a first and a second radiator, a beamforming network and a multi-channel receiver. The first and second radiators are arranged at positions symmetrical to the aiming axis for radiating radar pulses for a predetermined period of time to generate the first and second directional radiation patterns. The beamforming network combines the first and second directional radiation patterns of the first and second radiators into a sum and difference pattern in in-phase and inverse relationship. The multi-channel receiver forms an orbit signal from sum and difference patterns, which indicates the deviation of the target from the direction of the visual axis and the sidelobe suppression signal due to the suppression and the sidelobe response of the pattern. The first and second directional couplers are placed in the sum and difference pattern signal transmission paths between the beamforming network and the multi-channel receiver. The first and second calibration signals of the same amplitude and phase are injected into the sum and difference pattern transmit channels via the first and second directional couplers. Such a calibration signal is detected at the output of the multi-channel receiver and the phase characteristics of the signal and the difference pattern transmit channel are compensated for their consistency with the test results.